9,504
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Topics: computer, memory, pentium, pc
Mục lục : Đọc Tục ngữ và câu đố Mông - 5 Tục ngữ - 14 Chú thích Tục ngữ - 43 Câu đố - 53 PHẦN CHỮ MÔNG - 77 Hmôngz li păngx lul - 79 Hmôngz li cxax miv txưr - 92 NXB Văn hoá Dân tộc : Chịu trách nhiệm xuất bản: Nông Hoàng Thụ [? - nhìn không rõ]; Tổng Biên tập: Đặng Nam; Biên tập: Triệu Mùi Say; Thiết kế Mỹ thuật: Gia Lâm; Sửa bản in: Tuyết Trinh. In tại Nhà in Nhân dân Hà Nội II;...
Topics: sách văn học, tục ngữ, câu đố, dân tộc Mông, sách tiếng Việt
168
168
1979
1979
by
Giàng A Páo; Lâm Tâm
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sách Truyền thống của dân tộc Mèo đoàn kết đấu tranh bảo vệ Tổ quốc Việt Nam (Mênh Cxux Hmôngz Thoanx Chêx Tơưx Txenhz Lê Yoanx Thôngr)
Topics: dân tộc, truyền thống, lịch sử, dân tộc Mèo, dân tộc H'Mông, Hmong, sách tham...
Heavy oil is a highly viscous crude oil which is difficult to recovery and contains a high amount of asphaltene and resins content. Excess of undesirable content in the crude oil increases the viscosity of crude oil. In this research article, heavy oil samples were collected in different oil fields and determined the viscosity. The viscosities of heavy oil samples were determined in the viscometer and the numerical corrections were examined for the fit in the heavy oil viscosity data. Applied...
Topics: Asphaltene, Heavy oil, Labedi, Resin, Redwood Viscometer & Viscosity
"The eyes of the LORD are in every place, beholding the evil and the good." PROVERBS 15:3
Topics: warning tract, Christian, Christianity
319
319
1824
1824
by
Spix, Johann Baptist von, 1781-1826
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Abaixo do título ... quas in itinere per brasiliam annis MDCCCXVII – MDCCCXX jussu et auspiciis Maximiliani Joseph I Bavariae Regis suscepto collegit et descripsit Dr. J. B. de Spix, … tabulae CXV A M. Schmidt monacensi depictae. Tomus II.
Topic: bub_upload
Source: http://www.brasiliana.usp.br/bbd/handle/1918/017354-09
In the operation of any machinery the most primary safety system is the braking system. The most basic designs of the braking system involve the conversion of kinetic energy to heat energy by friction. This is accomplished by friction between two rubbing surfaces. These brakes pose several problems i.e. significant wear, fading, complex and slow actuation etc. This paper is an attempt to solve these problems, where a contactless magnetic brake has been developed by using a metals disc which...
Topics: COMSOL, Eddy Current Brake & Permanent Magnet
SKOOLON KO KHOOB MAZEDAR HONA CHAHIYE, BAL DIVAS, 12.11.2017, ARVIND GUPTA, DAINIK JAGRAN
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Topics: SKOOLON KO KHOOB MAZEDAR HONA CHAHIYE, BAL DIVAS, 12.11.2017, ARVIND GUPTA, DAINIK JAGRAN
Shell and tube heat exchanger is the most common type of heat exchanger, widely used in oil refinery and other large chemical process. The energy present in the exit stream of many energy conversion devices such as I. C engines, Gas turbines etc. goes as waste, if not utilized properly. For example, the heat energy stored in the engine coolant can be utilized in a better way by recovering the heat for heating purposes inside the cabin. It is comparatively...
Topics: Shell and Tube Heat Exchanger, With and Without Baffles Design & Flow Analysis
It’s hard to deny that the fourth industrial revolution has taken place all over the world. It has changed many modes of human activities including manufacturing, trading, shopping, consuming and interacting. Recently, the term Industrial 4.0 has been mentioned many times. The fourth industrial revolution has not only impacted the manufacturing and business sectors, but also influenced and comprehensively changed people’s lives. It is reshaping the economic, social, cultural and humanistic...
Topics: Fourth Industrial Revolution, Industrial 4.0, Technologies, Industrial Design, Manufacturing...
L403 Loeb Classical Library
Topics: Latin, Greek, Classics, Loeb
Hazardous pollutants and limited sources of fossil fuels made power dependent sectors to focus on alternative sources. However, complete replacement is still constrained and challenging. Attempts to assure complete replacement were more or less fulfilled by biodiesels. In this article, trials made on EGR associated single cylinder CRDI engine with blends of Jatropha and Rice-bran biodiesels are discussed. Set of readings obtained under the split injection system of mass 10% pilot fuel and 90%...
Topics: Pollution, EGR, CRDI, Split injection & RJD-I and RJD-II
The optimization of the cam profile plays an important role to reduce noise and vibration in an internal combustion engine. This study analyzes a method for the design and experimentation of different cam profiles. The proposed method commences with the use of higher order polynomials for the cam profile. Subsequently, an optimum cam profile is redesigned and used in the engine. The improvement of the cam profile is based on optimized factors such as velocity and...
Topics: Cam Profile, Ramp Area, Sound Quality, Valve Train Assembly & Vibration Response
"Wherefore putting away lying, speak every man truth with his neighbour: for we are members one of another." EPHESIANS 4:25
Topics: honest, honesty, honestly, true, truth, truthful, truly, truthfully, truthfulness, lie, lies,...
19
19
1996
1996
by
Campbell, Rod, 1945-
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1 volume (unpaged) : 21 cm
Topics: Animals -- Juvenile literature, Toy and movable books -- Specimens, Toy and movable books, Textured...
This paper concentrates on different solar water heaters and control systems. Research is discussed on contributions and developments in solar energy collectors made up materials, heat transfer characteristics and manufacturing challenges. Comparative analysis in term of 4 % increase in performance of microchannel flat plate collector is discussed. Paper also focuses on recent technology developed using micro channels in flat plate collectors with actual temperature increase results....
Topics: Materials, Heat Transfer, Flat Plate Collector, Evacuated Tubes Solar Collector, Heat Pipe Tube...
Composite Materials are used in the making of structural components, marine components; automobile components, aerospace components and its application are widespread throughout various engineering fields. The main aim focused is about finding the rigidity of the materials under varying width with uniformity and to determine the point and region where the crack of mode - I propagate. To determine the crack length, an advanced screening system is...
Topics: Crack, Fatigue, Carbon-Glass & Composites
Generally, maximum angle of attack of a symmetric airfoil with downwash and up wash beyond which flow separation state is 16 degree. Un-symmetrical airfoil generates considerable amount of lift even at zero degree. Studies for improving efficiency of airfoil by delaying flow separation and increasing lift have been done in the past decades. Employing trailing edge flap, leading edge slot and slat are the result of those studies. Current studies dealing with lift optimization in airfoil is...
Topics: Lift Forces, Angle Of Attack, Flexible Wing, Turbulent Flow, Low Speed Aerodynamics & Symmetric...
Finite Element Analysis (FEA) was performed on elastic pressurized thick walled cylinder to determine the optimal location for an elliptical shaped cross bore. Preliminary investigations were performed on a radial elliptical shaped cross bore to establish an optimum diameter ratio in a cylinder with thickness ratio of 2.0. The cross bore diameter with size ratio of 2.0 gave the lowest Stress Concentration Factor (SCF) at 1.89.Henceforth,only the optimal diameter size ratio was used for further...
Topics: Pressure Vessels, Optimal Location, Elliptical Cross Bore & Stress Concentration Factor
Composites are nowadays used in automobiles, aerospace and marine engineering applications due to their low cost and less weight. This paper involves the fabrication and testing the flexural and hardness behavior of hemp and flax hybrid composite. In this work, the laminates are prepared by the hand-layup method. Epoxy resin with HY951 hardener is used as the binding agent for fabrication of a hybrid composite. Woven glass fiber (GFRP) layers are used on both sides of the laminate to...
Topics: Flax Fiber, Hemp Fiber, Hybrid Composite & Mechanical Testing
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112
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Sunan O Adaab
Topic: Sunan O Adaab
This paper aims to optimize and analyze a Warren, Pratt and Howe steel trusses and comparing Warren truss with other Pratt and Howe trusses. Existing structure steel trusses was initially optimized for minimum weight, in constrained with allowable stresses and deflections. The cross-sectional area of the truss members is taken as a design variable. Existing geometry and loading conditions of the truss are sized to mimic a real world environment. Every...
Topics: Warren Truss, Pratt Truss, Howe Truss, Steel, Optimization & Finite Element Method
8
8.0
1994
1994
by
Mathews, Peggy B
texts
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30 pages : 29 cm
Topics: Hmong (Asian people) -- Folklore, Hmong language materials -- Bilingual, Hmong (Asian people)
In this study, the aeronautical and aerospace standard rocket injector have been analyzed with different aerodynamic parameters in order to understand the performance of the injectors in different atmospheric conditions. These injectors are the primary device to inject the fuel form the manifold to the ignition chamber. It creates the requited pressure, mass flow rate and the flow velocity in order to generate atomization of the fuel molecule. This atomization of the micro fuel droplet create...
Topics: Rocket Engine, Spray Atomization, Fuel Injector, Aerodynamic Parameter & Engine Nozzle
Computational fluid dynamics (CFD) is commonly used in engineering procedures for fixing and modeling and modeling complicated manufacturing apps. However, simulation time is too lengthy and time is dramatically shortened according to control requirements. Methods and instruments for calculating power allocation and governance are often employed for the analysis in various manufacturing systems such as heat furnaces and boilers and in various fields of blending and heat systems. A very big...
Topics: Computational Fluid Dynamics, Heat Transfer, Micro-Channels, Temperature, Optimization &...
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This work is a step to find out the best optimized design of a car chassis taking material of pipe, pipe diameter and the thickness of pipe as prime parameter. We have accomplished this stress analysis, with the help of ANSYS software and Taguchi methodology. The Stress analysis of the car chassis will fit all aspects and concepts according to the rules of Marathon Challenge. The objective of this project is to design best car chassis. We did this to avoid any possibilities of failure in the...
Topics: Chassis Design, ANSYS, Impact Forces, Matlab, Taguchi Method
The present study investigates the performance, combustion and emission characteristics results of a 5.5 kW constant speed diesel engine, which was modified to run with both diesel and CNG fuel (diesel+CNG) under combined mode condition. The experiment was conducted with CR: 19.5:1at maximum power condition (at 1500 rpm and 5.5 kW). The brake thermal efficiency (BTE) of the engine was found lower at all different energy ratio, in comparison to diesel fuel (0% energy ratio). The deteriorations...
Topics: Diesel, CNG, Emissions, BTE & Diesel Engine
Ethanol-gasoline fuel blend is the most encouraging substitute to the gasoline fuel for all new generation spark ignition (S.I.) engines. By the adding ethanol which is oxygenated in nature, a higher level of oxygen and octane rating is achieved, which in turn increases the volumetric efficiency and combustion efficiency of the naturally aspirated S.I. engine, with a reduction in heat loss after the combustion, as compared to the pure gasoline driven engine. In this research paper, we...
Topics: Ethanol-Gasoline Blend, Heat Loss, Intake Air Temperature, Spark Ignition Engine & Throttle...
The environment and air is highly polluted because of exhaust emission from automobiles, so the need of the hour is to reduce the exhaust emission. Hence our investigation is to reduce the emission there by controlling the air pollution and to save the environment for happy utilization of the future generation. The experiments were conducted with various blends of diesel and biodiesel, with and without nano particles at different loads and proportions. Our investigation...
Topics: Diesel, Biodiesel, Aluminum Oxide Nanoparticles & Emissions
The main objective of this work is to study the three samples of glass fibre reinforced with three different ratio of epoxy resin. In this study the different weight percentage of given material properties are identified by using destructive such as tensile test, impact test, hardness measurement and vibration analysis (non- destructive testing method). The main aim of this study to predict the quality of the materials (weight percentage of suitable given materials) using the above test...
Topics: Composite, Glass Fibre, Epoxy Resin, Destructive Testing & Vibration
Biodiversity indices developed have been used to find plant biodiversity index, bird biodiversity index and aquatic biodiversity index, independently. However, a single index is not available to represent biological environment in a nutshell, which can represent aquatic biodiversity, plant biodiversity and bird biodiversity index. Moreover, in development of these indices, Crisp Set Theory has been used, which deals with standing boundary conditions. In present paper, an attempt has been made...
Topics: Biodiversity Index, Fuzzy Biodiversity Index, Fuzzy Set Theory & Shannon Wiener Index
A composite based on Mg-3Zn-1Cu-0.7Mn alloy reinforced with Al 2 O 3 was synthesized using blend-press-sinter powder metallurgy route and hot extruded at 400 o C. The study concentrates on investigating the effectiveness of alumina as reinforcement and analyzing the effect of stress relieving on the mechanical and microstructural properties of the composite. The results of the study indicate that the ultimate tensile strength, yield strength and fracture strain of the composite was increased in...
Topics: Mg-Zn Composites, Powder Metallurgy, Stress Relieving, Tensile Strength, Yield Strength, Fracture...
Indoor air environment of residential building depends on the circulation of air inside the building and exhaust system. It is necessary to have uniform flow of air inside the building at working plane. Buildings are design with natural ventilation strategy to reduce the energy consumption of building. Natural ventilation depends on inside and outside building parameters like, outside wind speed, obstruction in room, shape of building, inlet and out let windows location size, orientation,...
Topics: Window Size, Ventilation, Computational Fluid Dynamics (CFD), Air Circulation & Simulation
This paper presents a suggested injector test bench construction, and also testing of its performance and application, because there is no device for testing the workability for this kind of injectors. Also, service dealers in Jordan and Middle East replace all injectors of any equipment, equipped with this kind of injectors when an overhaul for the engine is needed, which means at least eight injectors are replaced even if not all of them are not working properly. So, this bench will save a...
Topics: Hydraulic Test Unit, Injector & Internal Combustion Engines
Hydrogen may serve as sustainable eco-friendly and renewable energy resources, to meet challenges of climate change and decline of petroleum resources. Solid state hydrogen storage seems to be an appropriate method out of many more, due to high volumetric hydrogen energy density. In the present research work, the reduced graphene oxide synthesised, by chemical co-precipitation method, is explored as electrochemical hydrogen storage material. The novel organic concept employed for the synthesis...
Topics: Graphene, Reduced Graphene Oxide, Hydrogen Storage, Fuel Cell Application & Proton Battery
Laminates that could find its way for high performance applications in Aerospace and Electronics industries requires structural rigidity besides a higher stiffness and better electrical properties. These kinds of laminates with enhanced rigidity/transmission index are required so as to get functionalized for applications like Radome, whose main requirement is to be a structurally stronger and electromagnetically transparent one, in order to transmit the EM signals with minimal attenuation loss....
Topics: Cyanate ester, Glass Spheres & Fumed Silica
Ti-6Al-4V has much advantage in mechanical properties, but it is difficult in machining process. It is well known that exhaustive research have been already conducted over the issues on surface alterations. Still, there exists a gap to reduce these damages by improving tool design for a smoother cutting process and to avoid heavy heat generation. In this project, after an exhaustive survey we have decided to adopt Tungsten Carbide for the milling process. All basic material properties (such as...
Topics: Milling, ANSYS Software & Tool Life
Depletion of origin and anguish of health issues due to emissions by petroleum discharge triggered to take necessary steps to avoid adverse effects on forthcoming generation. In view of this tremendous work is being done to diminish dependence on fossil fuels by biodiesel which are ecofriendly. In this research work an investigation of biodiesel blends with diesel at different ratios will be done. Blends of pig fat biodiesel and palm biodiesel are prepared with different proportions of diesel....
Topics: Health, Biodiesel, Fossil Fuel & Ecofriendly
A centrifugal pump’s function is to transport fluid from one system to another system, within minimum time. Impeller is a key component in centrifugal pump, it intakes fluid through hub of impeller axially and distributes the fluid, radially. The configuration of the impeller blades directly effects the performance. The current paper investigates the characteristics of the pump by altering the blade profile and exit blade angles. A destructive phenomenon of cavitation is greatly influenced by...
Topics: Impeller, Cavitation & Simulation
Thermal performance of a low cost linear Fresnel solar collector with an absorber tube and a secondary reflector has been studied. The design was made with a compact geometry with optimum optical efficiency. The focal point was determined through iterative methods. The absorber characteristics were studied to determine the best factors that can improve efficiency of the system. The black coated absorber was investigated to achieve better heat gain and efficiency. The increase in heat transfer,...
Topics: Linear Fresnel Collector, Parabolic Dish, Solar Collector, Secondary Reflector, Absorber Tube &...
One of the main objectives worldwide is to improve energy efficiency, and the manufacturing sector is no exception due the high levels of energy consumption necessary to carry out its transformation processes. As a result, the way machinery operates should be reconsidered. The purpose of this article is to present the results of a study on the influence of several cutting parameters on the energy consumption of a Computer Numerical Control (CNC) machine, a Leadwell V40 iT, during 3-axis...
Topics: Energy Efficiency, Machine Tools, CNC & Machining Center
In the present work Copper (Cu) is used as a dopant element in titanium dioxide (TiO2) crystal structure to enhance the photovoltaic performance of the silicon (Si) solar cells fabricated with TiO2 thin film. Highly ordered Copper doped TiO2 particles were synthesized by using hydrothermal method with different molar concentrations of 0.25, 0.5, 0.75, and 1.0% and by dispersing in 5 ml of ethanol. During this process Copper doped TiO2 layers were coated on mesoporous TiO2 films by spin coating...
Topics: Si solar Cell, TiO2 Thin Film, Cu Doping & Efficiency
In minimizing emitted air pollutants, it is necessary to modify it by creating a pollutant absorber. Modifications are made in this research is by using coconut shell charcoal mounted on the end of industrial stack. The coconut shell used in absorbing air pollutants, before leaving the stack, while to keep the charcoal from burning, a condensation system is performed. The results showed that the concentration of SO 2 and dust contaminants decreased by 34% and 42%, respectively. The decrease in...
Topics: Minimization of Pollutants, Stack Modification, Coconut Shell Charcoal, Air Pollutants &...
Automation within the contemporary world is inevitable. Any automatic machine focuses towards the economical use of man, machine and material well worth the most. For small and tiny scale industrial units the sheet cutting machine is manually operated. In this paper, solenoid valve and Arduino controller is used for automation. The machine works with the help of double acting pneumatic cylinder. The piston is connected to the moving cutter. The machine is easy to...
Topics: Automation, Arduino Controller, Solenoid Valve & Double Acting Cylinder
The fear of the Lord is a crown of wisdom, making peace and perfect health to flourish; both which are the gifts of God: and it enlargeth their rejoicing that love him. Ecclesiasticus 1:18
Topics: crown, Christian, tracts, wisdom, peace, Bible verse, Christianity
"...that through death he might destroy him that had the power of death, that is, the devil; And deliver them who through fear of death were all their lifetime subject to bondage." HEBREWS 2:14-15
Topics: death, cemetery, grave, graveyard, heaven, dead, life, live, Christian, Christianity, Bible verse,...
Matel matix composites have better properties and performance, compared to the pure metals that justifies their added cost. The present work includes fabrication of metal matrix composite having Aluminium as a base metal and Graphite as the reinforcement. The mechanical testing of the fabricated composite is performed and the mechanical properties are compared with the properties of pure Aluminum. Structural material characterization of the fabricated composite was also performed by X-ray...
Topics: Composite Material, Aluminium, XRD & Matel Matrix Composite
Boiler tube failure continues to be the leading cause for forced outages in fossil fired boiler. The tube failure may be a simple problem, unless it causes damage to the power plant and affects safety of the human being. The problem due to tube failure is realized only when the cost due to failure estimated. The main objective of our project is to reduce the number of tube failures occurring in boiler accessories at thermal power station by analyzing the reason...
Topics: Boiler Tube, Fluid Dynamics Software & Thermal Power Station
CO 2 emissions from buildings and construction rose by nearly 1% per year between 2010 and 2016; releasing 76 Gt CO 2 in cumulative emissions. India is amongst the major producer of Fly ash, 57% of total power obtained from combustion of pulverized coal. By the end of the year 2020, the production of fly ash is going to cross 350 million tones. In order to utilize this fly ash that is considered as a waste in the manufacturing of roof tiles replacing the traditional clay and feltspar. The roof...
Topics: Fly Ash, Utilization of Fly Ash, Waste Material, Environment & Mechanical Properties
71
71
2008
2008
by
Gerdner, Linda; Langford, Sarah; Loughridge, Stuart, ill
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Ten-year-old Chersheng helps his beloved grandfather cope with his failing memory, brought on by Alzheimer's disease, by showing him the story quilt Grandfather made after fleeing his homeland, Laos, during wartime
Topics: Grandfathers, Alzheimer's disease, Memory, Quilts, Laotian Americans, Family life, Hmong language...
Dynamic contact surfaces life rate depends on various factors, majorly it is influenced by wear between contact surfaces. Hard facing is one of ancient technique used to improve mechanical properties, majorly surface properties of contacting surfaces and reduces the internal stress. The present investigation is on the influence of multilayer hard facing on abrasive wear compared to monolayer hard facing. Composition of Fe with the addition of chromium and vanadium based hard facing coatings are...
Topics: Hard facing, Multilayer, Monolayer, Dendrite Colonies, Carbide Volume Fraction & Abrasive Wear
Gears are one of the important parts and that are indispensable for mechanical power transmission systems. There are many stresses that can cause failure in gears in mechanical transmission systems. Bending Stress is one of the most common problems in the gears. Stress analysis is of great importance, because it can predict failure and the optimal design can be achieved. This paper is designed to analyze bending stress using the ANSYS program. The model is drawn by the SOLIDWORKS program, and...
Topic: Helical Gear Failure & Bending Stress
With technological developments in manufacturing industry, very hard and tough materials are being developed. Inconel 718 is one such material, which is a nickel based super alloy having high temperature and high-pressure applications. Inconel 718 is very difficult for machining, because of its materialistic properties. Surface finish produced after any machining process on inconel718, is generally not up to the required level. So, surface finishing of Inconel718 is a challenging job to tackle...
Topics: Magnetic Abrasive Finishing, Inconel718, Surface Finish & Ferro-Magnetic Abrasive Particles
In the given analysis, the exergetic analysis of finned absorber plate solar air heater (SAH) is done. Here Thermal model for finned based absorber plate SAH is developed. Experimental observations were made in Indian (25º N, 81º E) climatic circumstances. About 9.87% deviation is observed in theoretical & experimental values of exit air temperature of SAH. Highest value 2.17 % exergy efficiency could be accomplished here. The obtained results show the improvement in the solar air heater...
Topics: Solar Collectors, Fin Efficiency, Total Losses & Exergy Destruction
To aid in understanding the concepts of aerodynamics, wind tunnels are used. The aim of this paper is to design and analyze a two throat supersonic wind tunnel to give a better start-up condition at supersonic speeds. As the tunnel design involves high complexity, it is generally convenient to divide into segments. Initially, nozzle segment is developed using the method of characteristics (MOC) because, a careful designed nozzle is vital for tunnel function. In the next step, a settling chamber...
Topics: CFD, Design, Grid, MOC, Mach Number, Start-Up & Wind Tunnel
Many parts and components used in mechanical industry are manufactured by cold pressing operations. Die is the main tool in these operations. There are different types of dies like progressive die, compound die and combination die. This paper presents design and fabrication of a compound die which combines blanking and piercing operations . Design and development of compound die is one of the important phases in sheet metal working. The small error in the design can...
Topics: Cold Pressing, Progressive Die, Compound Die, Combination Die, Blanking, Piercing, Solid works...
Ultra high temperature ceramics are known for their good wear resistance, good oxidation resistance, high mechanical strength, extreme hardness, high thermal conductivity & good fracture toughness properties. These characteristics of ultra-high temperature ceramics made them ideal for high temperature applications. Therefore, ultra-high temperature ceramics are mostly used in aerospace application, thermal...
Topics: Zirconium Diboride (ZrB2), Silicon Carbide (SiC), Polycarbosilane (PCS), EDM (Electron Discharge...
Metal Matrix Composites (MMCs) are extensively used in structural, automobiles and aerospace employments because of their enhanced mechanical characteristics. Wear tests are essential to study the performance level of MMCs used in various engineering applications. The joined special property of stir casting and in-situ system shaped Al6061-TiB 2 composites, with dissimilar reaction holding periods from 0 to 60 minutes in steps of 15 minutes. Wear tests have been carried out to find the wear...
Topics: Metal Matrix Composites (MMCs), Al6061-TiB2, K2TiF6 and KBF4, Pin-on-Disc Apparatus & Reaction...
Recently additive manufacturing is proudly called as “the third industrial revolution”. For more than two decades research was going on in the development of Additive Manufacturing (AM) technology. Additive manufacturing is the process of building parts by adding materials one layer above another layer. This paper overviews the highest achievements of Additive Manufacturing (AM) technology in various fields for various applications, such as biomedical, automotive, aerospace, etc. in the...
Topics: Additive Manufacturing, Rapid Prototyping & Industrial Revolution
Rubber assisted sheet metal forming has always been the subject of research for last 50 years. Rubber diaphragm is primarily used to improve the formability of the sheet metal components having complex features. In this paper, three varieties of rubber viz. Natural rubber, B- nitrile rubber and Silicon rubber are used to form the hemispherical part made out of pure copper. The rubbers are manufactured in such a way to achieve the same hardness level so that...
Topics: Formability, Grid Analysis & Natural Rubber
Robotic exoskeletons are one of the extremely vigorous zones in recent robotic exploration as it is an emerging product which fulfils different applications in society. In the last six decades, many research works have been carried out to escalate the staging of exoskeletons thus flourish them to nearly mercenary products. This paper briefly studious the current progress of the robotic exoskeleton structures and furnishes awareness into the modern evolution in robotic exoskeletons along with...
Topics: Exoskeletons, Robot, Healthcare, Military, Classifications & Development
51
51
2003
2003
by
Ronald Strahan
texts
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Wrath is cruel, and anger is outrageous; but who is able to stand before envy? PROVERBS 27:4
Topics: envy, envious, jealous, jealousy, thankful, grateful, gratitude, Christian, Christianity, Bible...
And fear not, my son, that we are made poor: for thou hast much wealth, if thou fear God, and depart from all sin, and do that which is pleasing in his sight. Tobit 4:21
Topics: eagle, wealth, rich, diligent, diligence, work, Christian, tracts, wisdom, wings, heaven, Bible...
Nowadays, the high quality of surface finish is in demandto meet the market requirements. Manufacturing industry has many complex processes that vary in nature. The current paper describes the development of a model for pocket milling on Al7075 using Response Surface Methodology (RSM). This model gives mathematical relationships in terms of Cutting speed, Feed and Step Over for Follow periphery and Zigzag tool path strategies. The Surface Roughness (SR) is predicted with these relationships and...
Topics: Pocket Milling, Aluminium, RSM, Tool Path Strategy & Optimization
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35
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This paper deals with the feasibility study of biodiesel production from the tallow rendered from the subcutaneous wastes. The subcutaneous wastes were collected from leather tanneries and animal slaughter houses. The fat content was determined based on the proximate analysis of the collected wastes and various rendering techniques were employed to study the rendering effectiveness. Base catalysed single step transesterification was carried out for biodiesel production....
Topics: Subcutaneous Wastes, Leather Fleshing, Beef Tallow, Ethanol Based Transesterification & Fatty...
In this work study has been made on the computational fluid dynamics analysis of the shell and tube heat exchanger (STHE). CFD was used for the design and analysis of this heat exchanger. In the analysis water and nano fluid are taken for study. Discussion has been made on the various boundary conditions used. The resulting navier stokes equations are solved with the help of a software named as “ANSYS”. Temperature, velocity and pressure distribution are analyzed. A comparative study is...
Topics: STHE, CFD, Temperature Distribution, ANSYS, Velocity Distribution & Heat
Two series of Al-Cu-N films containing Cu were grown by DC / RF magnetron sputtering of two elemental targets in an Ar / N & sub2; Gas mixture deposited by biasing a high-speed steel substrate. The effects of Cu content and deposition conditions were investigated with respect to the microstructure, morphology and mechanical properties of the films. The structure and mechanical properties of these films were dependent on the copper concentration. X-ray diffraction analysis and...
Topics: DC/RF Magnetron Sputtering, Ar-N2 Gas Mixture & X-ray Diffraction
In the recent era, energy is more preferred to be produced from renewable energy resources rather than from non-renewable resources. Both non-renewable and renewable energy resources have their own limitations such as the set up cost for renewable is high whereas pollution from non-renewable is high. Based on the limitations, researchers focused on the emission control in automobiles rather than using non-renewable sources. This forms the major objective for the engine designers to achieve...
Topics: Intake Manifold, Venturi, Air-Fuel Ratio & Velocity Contour
The different manufacturing sectors in the era are striving hard to introduce innovative long-term strategies into their operations. The aim of the study is to integrate those advanced techniques with sustainable operations; to promote advanced sustainable melting process so these manufacturing sectors can thrive even in uncertain markets. To establish this connection, this study analyzes the drivers of the advanced sustainable melting process through a proposed framework validated using a case...
Topics: Advanced Sustainable Melting Process, Parameters, AHP & MCDM
Studies on non-circular jets have become a captivating field of interest, since the technique exploits the advantage of the nozzle exit geometry, in terms of mixing characteristics. The supersonic jet mixing can be effectively employed in the injector orifice in a Supersonic Combustion Ramjet (SCRAMJET) engine, looking for shorter combustor lengths that accounts to weight reduction of the engine. This paper puts forward the experimental evaluation of mixing characteristics of supersonic flow...
Topics: Hexagonal Nozzle, Octagonal Nozzle, Jet Entrainment, Potential Core & Shadow Graph Technique
27
27
1995
1995
by
Knight, Margy Burns
texts
eye 27
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"Hmong/English"--Cover
Topics: Walls, Human geography, Hmong language materials, Walls -- Juvenile literature, Human geography --...
Energy needs are large and inevitable but energy production by Thermal and Nuclear power producing plants may have to be gradually withdrawn as they are directly and indirectly harmful and dangerous to the entire world where all human beings and all other living things will have to live peacefully. The better alternative energy like wind energy is already being exploited and used even though by some less effective wind turbines [1] which can be improved using higher efficiency wind turbines as...
Topics: Ocean Wave Energy, Physical Turbine Models, Designs, Mighty Green Energy Source, Reciprocating and...
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